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ft_strtrim.c
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ft_strtrim.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strtrim.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ggane <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2016/04/19 08:48:48 by ggane #+# #+# */
/* Updated: 2016/04/25 09:01:52 by ggane ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static char *enleve_first_blanks(char *trim)
{
int i;
char *trim_copy;
i = 0;
while (trim[i] == ' ' || trim[i] == '\n' || trim[i] == '\t')
i++;
trim_copy = &trim[i];
return (trim_copy);
}
static size_t calcule_taille(char *trim)
{
size_t size;
size = ft_strlen(trim);
if (size == 0)
return (size);
while (trim[size] == ' ' || trim[size] == '\t' ||
trim[size] == '\n' || trim[size] == '\0')
size--;
return (size + 1);
}
char *ft_strtrim(char const *s)
{
char *trim;
char *res;
size_t size;
if (!s)
return (NULL);
trim = (char *)s;
size = 0;
if (*trim != '\0')
{
trim = enleve_first_blanks(trim);
size = calcule_taille(trim);
}
res = (char *)malloc(sizeof(char) * size + 1);
if (res == NULL)
return (NULL);
res = ft_strncpy(res, trim, size);
res[size] = '\0';
return (res);
}